This could be your GG in the 1900 census with parents Humphrey and Allie. See attached.
This appears to be the widowed Allie/Alice is 1910. Link to census:https://familysearch.org/pal:/MM9.1.1/MG7B-WZP
It appears that Allie/Alice remarried and is once again a widow by her second husband.
Link to 1920 census:https://familysearch.org/pal:/MM9.1.1/M6TJ-3PG
This appears to be Alice in 1930:https://familysearch.org/pal:/MM9.1.1/XCCH-X32
Youngest child with sister Pauline in 1940:https://familysearch.org/pal:/MM9.1.1/KQZQ-HXX
Attached is the death certificate for Alice Gordon Charles showing her deceased spouse as Wm. Charles. Note it appears her daughter Mary, the informant, is now married, and is known as Mary Epsom.
This could be Mary Epsom/Epson in 1940:https://familysearch.org/pal:/MM9.1.1/KQZ3-7G5
Son, Humphrey Gordon, died in 01.13.1940. Death certificate attached.
Note: I could not find a death certificate for Alice's spouse, Humphrey, in the PA death records. This suggests he died before 1906, the year statewide records begin. Based on the youngest child's birth in 1905, it would appear that Humphrey may have died in 1905, possibly 1904 if Humphrey died before his child's birth.